He arises seemingly possessed by Paimon and joins his followers in the treehouse, where Charlie’s head is mounted ominously on a mannequin. While there are plans for Ari Aster's Hereditary 2 ...

Hereditary is not based on a true story ... The central force of horror in the film is Paimon, one of the demons from the grimoires who has placed a generational curse on the Graham family ...